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For example, there was the big-block 454 RPO LS6 in '70 to '71, and also the '01 to '05 RPO LS6 Gen III small-block.
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The same RPOs are often reused through the decades, so it's important to remember that the same RPO may designate completely different packages, combinations, or even engine families. Thus, L88, LS1, or LQ9 are simply option codes for a particular engine package in a particular model year. Most engine RPOs begin with the letter L, trans options with an M, rearend options with a G, suspension options with an F, special vehicle engine/chassis/body packages with a Z, brake options with a J, and HVAC options with a C. It is even possible to install a big-block in this car just remember, the bigger and more rad the motor, the more everything else-including the rest of the drivetrain, the cooling system, the electricals, and the suspension-needs to be beefed up. Hedman Hedders, Hooker Headers, Sanderson Headers, and Trans-Dapt are other aftermarket sources for headers and/or conversion mounts. Besides information, it offers parts of its own design, as well as the best parts from other aftermarket manufacturers. is the one-stop site for everything you need to know about this swap, as well as critical parts needed to pull it off. Depending on your budget and how much power the engine makes, it can be as simple as just installing the V-8 with available aftermarket mounts and headers (even while retaining the stock feeble trans and rearend) or as complex as building up a serious semipro back-halved race car. Installing a small-block Chevy V-8 into a Vega and other GM H-bodies was one of the most popular swaps in the '80s.
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